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DIY Home Built Motorized Bicycle (non kit) Post all about your home built rides here. Weedwacker motors, lawn mower engines ect. This area is for non kit builds


Help with choosing motor

Post all about your home built rides here. Weedwacker motors, lawn mower engines ect. This area is for non kit builds


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  #21  
Old 02-01-2013, 01:35 PM
mat_man mat_man is offline
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Default Re: Help with choosing motor

It would be easy to monitor motor temperatures with a spark plug thermocouple (ebay $15) and a $4 HF digital voltmeter. Or maybe rob some thermocouple wire from a gas heater.

An air leak , from a failing main seal on some 2 strokes, could cause a too lean condition, overheating and trashing your motor.

This shows how:

How Thermocouple work? How hot is a lighter flame? - Thermocouple experiment
https://www.youtube.com/watch?v=rznBiteUy2A


This sensor is to be installed between the cylinder head and spark plug hex to monitor cylinder head temperature (CHT).
The Cylinder Head Temperature Sensor (CHT Sensor) is designed for surviving high vibration and temperatures up to 752 degrees F (400 degrees C). The sensor will fit most 10 mm spark plugs.

The sensor cable is over-braided in stainless steel for heavy-duty abrasion resistance. The signal wires are Teflon insulated. Designed to deliver high performance, high temperature measurements, reliably and consistently in the most extreme operating conditions.

The high temperature sensors of choice for professional racing teams, R&D test labs, and Enthusiasts. The CHT sensors can be used for many different applications, including… but not limited to… Karts, Drag Racing, Formula 1, NASCAR, Off Road, Snowmobiles, and Boat Racing.
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Last edited by mat_man; 02-01-2013 at 04:38 PM.
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  #22  
Old 02-01-2013, 01:42 PM
4runneradam 4runneradam is offline
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Default Re: Help with choosing motor

What temps are normal? And where to monitor? Head? Block?
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  #23  
Old 02-01-2013, 04:49 PM
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dracothered dracothered is offline
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Default Re: Help with choosing motor

Quote:
Originally Posted by 4runneradam View Post
What temps are normal? And where to monitor? Head? Block?
The reason temps were brought up is because if you remove all the cooling tins you have to be aware of over heating. You may ask why remove the cooling tins and that is easy to answer. It is to make it look nicer, more vintage and so on.
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